Section 4, Controls & Instrumentation - Gardner Denver AirSmart ELECTRA-SAVER Operating And Service Manual

SECTION 4
CONTROLS & INSTRUMENTATION
GENERAL DESCRIPTION - The Gardner Denver Rotary Screw compressor is prewired with all controls,
motor, and starter for the voltage and horsepower at the time of ordering. It is necessary only to connect
the compressor unit to the correct power supply and to the shop air line (and to the appropriate water
supply if water-cooled). A standard compressor unit consists of the compressor, oil reservoir, oil cooling
system and filter, motor type as specified, UL TYPE 4 control box, and control components as described
below.
AIRSMART ® OPERATION
Operation of the "AirSmart" is dependent on selection of an operating mode from the controller keypad.
Prior to starting, the STOP/RESET key must be pressed to place the controller into its READY state (as
indicated on the display). Compressor operation may then be started by pressing the RUN key. While in
any operating mode, the display will indicate the mode, and the operating light will be on.
Press the STOP/RESET key at any time to stop the compressor under normal conditions.
AUTOMATIC is the most common selected mode of operation, as it automatically will operate the
compressor unit in the most efficient manner for the demand of the air system. Refer to the controller
manual for descriptions of other modes.
Detailed instructions for the controller are found in the "AirSmart" Controller Operating and Service
Manual.
Automatic restarting or electrical shock can cause injury or death. Disconnect,
lockout and tagout the unit from the power supply and any other circuits before
servicing unit.
CONTROL DEVICES
Controller - This compressor unit features the "AirSmart" controller, which integrates all the control
functions under microprocessor control. Its functions include safety and shutdown, compressor
regulation, operator control, and advisory/maintenance indicators. The keypad and display provide the
operator with a logical and easily operated control of the compressor and indication of its condition. The
controller is factory adjusted for the compressor package, but allows tuning for specific applications.
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